// Copyright 2022 Linkall Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package filter

import (
	ce "github.com/cloudevents/sdk-go/v2"
)

// Filtering result conditions.
const (
	PassFilter Result = true
	FailFilter Result = false
)

// Result has the result of the filtering operation.
type Result bool

// Filter is an interface representing an event filter of the trigger filter.
type Filter interface {
	// Filter compute the predicate on the provided event and returns the result of the matching
	Filter(ce.Event) Result
}
